How to stop Rhino Render in V7

I’ve tried all of these commands. Sometimes can stop by closing the Render window, sometimes not.
White hand on red, Button with two vertical Blk lines, Cancel Render Command, and Final Pass.
Is there a minimum number of passes Cycles has to do or am I missing something?

Actually after more testing I dont think this has anything to do with the render commands. Something is causing the app. to freeze during the render operation (but tracing operation continuing). The Force Quit menu does not show Rhino in Red but If I Force Quit and restart the Stop Command (white hand on red) works fine.

Well I dont know what else to try. I’m trying to render a Phycially Based Material on the Ground Plane. Everything in Detailed settings is turned off or set to zero. So the only adjustment are Rough and Opac and they are both set to zero.
I’m going to turn the Ground Plane off and apply the Material to a flat plate and see what happens.

For what it is worth, I just tried the stop button, and it works on my Macbook Pro uisng Rhino 7.14

_SystemInfo

Rhino 7 SR14 2021-12-14 (Rhino 7, 7.14.21348.13002, Git hash:master @ 5ab502b613f84488d00228948505c6f28ebfe598)
License type: Commercial, build 2021-12-14
License details: Cloud Zoo

Apple macOS Version 12.1 (Build 21C52) (Physical RAM: 16Gb)
Rhino is running in Rosetta2 on Apple Silicon
Mac Model Identifier: MacBookPro17,1
Language: en

Apple M1 (OpenGL ver:4.1 Metal - 76.3)

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On

Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: Apple
Render version: 4.1
Shading Language: 4.10
Maximum Texture size: 16384 x 16384
Z-Buffer depth: n/a
Maximum Viewport size: 16384 x 16384
Total Video Memory: 10922 MB
Graphics: Apple G13G
Displays: Unknown (298dpi 2x)

Graphics processors
Apple G13G
Color LCD (1680 x 1050 @ 60.00Hz)

USB devices
None

Bluetooth devices
None

Third party kernel extensions
None

Third party plugins
/usr/lib/swift/libswiftCloudKit.dylib
/usr/lib/swift/libswiftCore.dylib
/usr/lib/swift/libswiftCoreData.dylib
/usr/lib/swift/libswiftCoreFoundation.dylib
/usr/lib/swift/libswiftCoreGraphics.dylib
/usr/lib/swift/libswiftCoreLocation.dylib
/usr/lib/swift/libswiftDarwin.dylib
/usr/lib/swift/libswiftDispatch.dylib
/usr/lib/swift/libswiftFoundation.dylib
/usr/lib/swift/libswiftIOKit.dylib
/usr/lib/swift/libswiftObjectiveC.dylib
/usr/lib/swift/libswiftXPC.dylib
/usr/lib/swift/libswiftos.dylib
/usr/lib/swift/libswift_Concurrency.dylib
/usr/lib/swift/libswiftAppKit.dylib
/usr/lib/swift/libswiftCoreImage.dylib
/usr/lib/swift/libswiftMetal.dylib
/usr/lib/swift/libswiftQuartzCore.dylib
/usr/lib/swift/libswiftCryptoTokenKit.dylib
/usr/lib/swift/libswiftAccelerate.dylib
/usr/lib/swift/libswiftContacts.dylib
/usr/lib/swift/libswiftCoreAudio.dylib
/usr/lib/swift/libswiftCoreML.dylib
/usr/lib/swift/libswiftCoreMedia.dylib
/usr/lib/swift/libswiftOSLog.dylib
/usr/lib/swift/libswiftVision.dylib
/usr/lib/swift/libswiftsimd.dylib
/usr/lib/swift/libswiftNetwork.dylib
/usr/lib/swift/libswiftDemangle.dylib
/usr/lib/swift/libswiftFileProvider.dylib
/usr/lib/swift/libswiftIntents.dylib
/usr/lib/swift/libswiftPrivate_BiomePubSub.dylib
/usr/lib/swift/libswiftPrivate_BiomeStreams.dylib
/usr/lib/swift/libswiftUniformTypeIdentifiers.dylib
/usr/lib/swift/libswiftAVFoundation.dylib
/usr/lib/swift/libswiftCoreMIDI.dylib
/usr/lib/log/liblog_network.dylib

Rhino plugins that do not ship with Rhino
/Users/nathan/Library/Application Support/McNeel/Rhinoceros/packages/7.0/ProRender/1.0.0.7/ProRender.Mac.V7.rhp “ProRender” 1.0.0.7
/Users/nathan/Library/Application Support/McNeel/Rhinoceros/packages/7.0/EleFront/4.2.2/ElefrontProperties.rhp “ElefrontProperties” 1.0.0.0

Rhino plugins that ship with Rhino
/Applications/Rhino 7.app/Contents/PlugIns/NamedSnapshots.rhp “Snapshots” 7.14.21348.1002
/Applications/Rhino 7.app/Contents/PlugIns/PanelingTools.rhp “PanelingTools” 7.14.21348.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhMaterialEditor.framework “Renderer Development Kit” 7.14.21348.1002
/Applications/Rhino 7.app/Contents/PlugIns/Displacement.rhp “Displacement” 7.14.21348.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Commands.rhp “Commands” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Import_OBJ.rhp “Import_OBJ” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_XAML.rhp “export_xaml” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/QuadRemesh.rhp “QuadRemesh” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Export_OBJ.rhp “export_OBJ” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RDK_EtoUI.rhp “RDK_EtoUI” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_SVG.rhp “Export SVG” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/MeshCommands.rhp “MeshCommands” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Export_DAE.rhp “Export_DAE” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_PDF.rhp “PDF Export” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_IGES.rhp “IGES Export Plug-in” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Import_SVG.rhp “Import_SVG” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/BlockEdit.rhp “BlockEdit” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Export_AMF.rhp “Export_AMF” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoRenderCycles.rhp “Rhino Render” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/import_DST.rhp “Import_DST” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/export_PLY.rhp “PLY - Polygon File Format Export” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Import_AMF.rhp “Import_AMF” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCycles.rhp “RhinoCycles” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoDLR_Python.rhp “IronPython” 7.14.21348.13002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/GrasshopperPlugin.rhp “Grasshopper” 7.14.21348.13002

Please post your _SystemInfo results as well.

Applying the material to a flat plate worked fine several times,
Applying different materials to the Ground Plane also worked fine several times.
Obviously a clash of particular material or mapping with Ground Plane.
Will continue to try to isolate and will
inform if I figure it out.